Wrist-pin turner



(No Model.)

Patented Dec. 19, 1893 (No ModeLjgfl 2 Sheets-Sheet 2.

A R. L. LBVIN.

WRIST PIN TURNER.

No. 511,053. Patented Deo. 19, 412393.

114| NAYQONM. wmoummu COMPANY.

vunkmmou. n.

f UNITED STATES PATENT OFFICE;

RUDOLPH LEANDER LEVIN, OF MENOMNEE, MICHIGAN..

WRIST-PIN TURNER.

SPECIFICATION forming part of Letters Patent No. 511,053, dated December 19, 1893. Application ined october c1, 1892. :serial 1ra/150.523. on modem `.To @ZZ whom, it 4may concern.-

Be it known that I, RUDOLPH LEANpER LEvIN, a citizen of the United States, residing' and State of Michigan, have invented a new and useful VVristPin Turner, of which the `following is a specification.

My invention relates to improvements in lathesor machines for turning metal, and refers particularly to that class of devices which are employed to turn Wrist-pins and crankpiuswithout removing the latter from the engine.

The object of my invention is to simplify the construction and operation and increase the efficiency and accuracy of machines employed for this purpose, and at the same time to provide such a construction that the devlce may be used for boring or turning other articles than above mentioned. l Further objects and advantages of my invention will appear in the following descrip tion, and the novel features thereof-will be particularly pointed out in the claims.

lIn the drawings: Figure lis a perspective Vlewof a machine embodying my improvements, applied .in the operative position to a Wrist-pin.l Fig is a sectional view of the base and attachments, with the carriage removed, to show the manner of adjusting the base so that the spindle will center with the crank-pin. t Fig. 3 is a perspective view of the machine arranged in a vertical position to be employed in boring or turning other work ,than Wrist-pins. Fig. 4 is a longitudinal central section of the machine in its horif zontal position, as shown in Fig. l. Fig. 5 is an` end view showing the feed-mechanism'. Fig. f(i is a detail view of the tool-head. Figs; 7 and 8 are detail views of the parts of the centering devices, detached.

A represents the base of my turning machine, provided at one end with the perpendicular, perforated ears, B B, the object and functions of which will be explained hereinafter, and also provided with a longitudinal,

dovetailed Way, C,

D represents the carriage, provided4 with dovetaiied guides, d d, which are adapted to engage the Way, C, and are adapted to be applied thereto from the end remote from the ears, B;

Mounted in suitable bearings e c upon the carriage, is the spindle, E, and that end of this spindle which I will term, throughout fthis specification, the lower or inner end, '(the lower when the machine is iu its verlical position and the inner when in its horizontal position) is threaded to receive the tool-head, F,to be hereinafter more definitely described. i

` Arranged upon the spindle between its abovementioned bearings, is a worm-gear, G, provided with extended hubs, g g, having set-screws, g g", to engage the spindle, and the operating worm, H, carried by the transversely-disposed Worm-shaft H', meshes with the Worm-gear to communicate motion from the drivin g-shaft, thereto. The driving-shaft, I, which is geared by intermeshing pinious or gears, i', to the worm-shaft, is provided with a hand-wheel, l.

To the upper or outer end of the spindle is adj ustably attached a slotted link, K,held in` place by a set-screw, k, and carrying a pivotpin, K','which pivot-pin may be adjusted toward or from the center of the spindle by means of the slotted-link.

L represents the feed-screw, mounted at its opposite vends .in bearings, Z Z, in the opposite ends of the carriage, and extending at au intermediate point through a stationary feednut, M, which is removably secured to the base of the machine by means of the retaining-screw, m, extending through said base. By removing the retaining-screw the carriage, with the feed-screw and feed-nut, may be removed from the base by sliding its guides oft the end of the Way, aboveidescribed.

To the upper or outer end of the feed-screw is secured a ratchet, N, and upon thei feedscrew adjacent tothe ratchet is fulcrumed, at an intermediate point, the feed-arm, N', carrying a double or reversible pawl, O. This pawl is mounted upon one end of the feedarm, and the opposite end of said armis connected by means of the rod, P, to the pivotscrew of -the slotted link carried by the spindie. This pawl is provided with alateralparm, o, provided with a tapered or Wedge-shaped extremity, and P represents an actuating spring carried by the feed-armand provided with'a linger, p, toy engage either side of said tapered or Wedgeshaped arm, to hold either IOO member of the pawl in engagement with the ratchet. The arm, 0, is provided at its center, between the convergent sides or surfaces, with a. notch, p', whereby when the finger upon the actuating spring is engaged therein both members of the pawl are held out of engagement with the ratchet. As the spindle rotates the rotary motion is converted into a reciprocatory motion by the connecting rod, and the feed-arni is oscillated, thus causing the member of the pawl which is in engagement with the ratchet to alternately turn the same and slip idly over its teeth. When one of the members of the pawl engages the ratchet the carriage is moved forward or downward, and when the other member is engaged therewith the carriage is moved upward or backward.

The tool-head, F, above mentioned, comprises a body-portion, Q, having. a central block, Q', in which is formed the threaded opening, Q, to fit the threaded end of the spindle, and the adjustable slide, q, having a yoke, q', provided Vwith a tool opening, q. Extending in opposite directions from the central block are integral arms; the arm Q3 being recessed, as shown at Q4, and carrying the adjusting-screw, Q5, and the arm, Q6, be: ing longitudinally slotted, as shown at Q7, and having the yoke, q', of the slide fitted to slide thereon. '.lo the yoke, q', is connected an arm, g3, which carries a nut, g4, engaged by the adjusting-screw, Q5. A clamping'- sc'rew, designated by the letter, g5, is mounted in the yoke, q', to engage and secure the tool, R, in place. It will be understood that by turning the adj usting-screw, Q5, the tool may be moved toward or from the spindle as required bythe size of the wrist-pinor other article to be dressed.

S represents the crank-arm, and .S the wrist-pin to be turned, and the ears, B, are bolted to the crank-arm so as to' hold the base perpendicular thereto, or horizontal, as indicated in Figs. l, 2, and 4, and to enable the base to be adjusted so as to causethe spindle to` center with the wrist-pin, I remove the carriage, before applying the base to the crankarin, apply the annular' clamp, T, to the pin, as shown in Fig. 2, locking it in place by the radial set-screws, t t, fit the arm of the rotary scriber, T', upon the stem, t', of said clamp and then adjust the gage, U, the center of whose sleeve, u, is the same distance from its g'u'de, u', as the center of the spindle isfrom theguides, d d, of the carriage, by engaging said guide, u', with the way, C, and sliding it forward until the sleeve, u, receives the end of the stem, t. Thus, after adj ustin'g the clamp, T, by means of the scriber, and the manipulation of the set-screws, t t, so that its stem centers with the crank pin, the base I'n'nst be arranged so that the sleeve of the gage will receive the end of said stem, when the bolts by which the base is fastened to the crank-arm maybe tightened. The clampingring, gage, and scriber are now removed, and

the carriage is fitted to its place, the retaining screw, m, being engaged with the feednut, and the machine is ready for operation.

It will be understood that the centering mechanism shown and described forms no part of my present invention and included merely to illustrate the inauner in which .a centering device may be employed in lthis connection to bring the turning mechanism into operative relation to the wrist pin, and

hence 1 lay no claim in this application to this feature of the construction set forth.

The perpendicular perforated ears with which the base is provided enable the machine to be arranged in an upright position, as shown in Fig. 3, to perform the ordinary Work of a drill or turner.

The removability of the carriage from the base enables the latter to be more accurately adjusted to the wrist-pin and with less exertion to the operator. v v I Any other suitable form of chuck, socket or spider may be fitted upon the end of the spindle to adapt the machine for various kinds of work. I

I reserve the right to alter and modify the construction and arrangement of the details of my machine within the scope of my invention, as may bel found necessary V1n adapting it to the various kinds of work which it is designed to perform. n p l Having thus described my inventlomwh'at I claim, and desire to secure by Letters Patent is- Y 1T The combination with a base provided with suitable supporting devices, apcarriage slidably mounted upon the base', and `turning mechanism mounted upon said carriage, of feeding devices comprising a rotatable feedscrew engaging a stationary feed-'nut upon the base, a rocking lever swiveled upon the feed-screw and operatively connected to the turning mechanism, and a spring actuated pawl carriedby said lever to engage a ratchet upon the feed screw,substantially as specified.

2. The combination with a base provided with suitable supporting devices, a carriage slidably mounted upon the base, and turning mechanism having a rotatable spindle, of feeding devices comprising a rotatable feedsc're'w engaging a stationarynut upon the base, a rocking ylever fulcrumed upon the feedscrew, connections between said lever and the spindle of the turning mechanismV whereby the throw of said lever may be regulated, and a spring actuated pawl carried by the rocking lever in operative relation to aratchet fixed to Vsaid feed screw, substantially as speciiied.

3. In a machine of the class described,the combination with the base and the sliding carriage, of the spindle mounted upon the 'carriage, means for operating the spindle, a feedscrew mounted upo'n the carriage and extending at an intermediate point through a stationary feed-nut attached to the base, a feedarm fulcrumed upon the feed-screw, a con- IOO IZO

elipse L- 'meeting-rod between the spindle and the feed l arm, and a. pawl andiratchet connection be tween the feed-arm and the feed-screw, substantiaily as specified.

4. In e machine of the class described, the combination with the base and the carriage `mounted thereupon, of the spindle mounted upon the carriage, means for operating the spindle, a slotted link carried by the spindle,'

a. feed-screw carried by the carriage and engaging a stationary feed nut upon the bese, e feed-arm fulcrnrned upon the feed-screw, and

` .t connected at one end to said slotted link, and

- pawl and ratchet connectionbetween the feedarm and feed-screw, substantially as specified. 5. In e. machine of the class described, the

Y combination with a base and acari-inge mounted to slide thereupon, ot' a feed-screw mounted upon the carriage and engaging a stationary nut upon the base, theturning-spindle, means 6. Theeombination with a. spindle and snpporting devices-tohold the same in alignment, axially, with the wrist-pin, of a transversely disposed tool -h'ead, having a body-portion Q, a. sliding member q provided with a, toolsoeket, and adjusting devices connecting the pertsot' the head whereby the distance of the tool from the center of rotation may be va.- ried, substantially as speciled.

7. The combination with a spindle and sup porting devices to hold the same in axial alignment with a. wrist-pin, of a tool-head having a transversely-disposed body portion Q fixed to the spindle and provided with a longitudinal slot, an' adjustable member q slidably mounted upon the bod y-portion and provided with a tool socket aligned with the slot in the body-portion, and adjusting and locking devices connecting the body portion end slideble member, substantially as specified.

lIn testimony that I claim the foregoing as my own I have hereto affixed my sgnatu re in the presence of two Witnesses.

YRUDOLPH LEANDER LEvIN.

' Witnesses:

W. O.- CARLSON, C. A. HILLBoRN. 

